US Bridges

T 173 over Stream

FairPosted for load

Mower County, Minnesota · 1.6 MI E of JCT Csah 8 · Structure no. L5099

Built
1936
89 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
24 ft
1 main span
Daily traffic
54
1986 count
Owner
County
County Highway Agency

About this bridge

T 173 over Stream is a steel stringer/multi-beam or girder carrying T 173 over Stream in Mower County, Minnesota. It was built in 1936, so it is 89 years old, older than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 54 vehicles a day, projected to reach 54 by 2029. The structure is 24 ft (7.3 m) long and 25 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesT 173
CrossesStream
Location1.6 MI E of JCT Csah 8
RouteCounty Highway 173
CountyMower County
StateMinnesota
Coordinates43.79767, -92.52861
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating21.6 US tons
Inventory rating12.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length24 ft (7.3 m)
Longest span22 ft (6.6 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic54 (1986)
Projected traffic54 by 2029
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$285.6 million (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was T 173 over Stream built?

It was built in 1936, making it 89 years old in 2025.

What condition is T 173 over Stream in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2024.

How much traffic does T 173 over Stream carry?

About 54 vehicles per day (1986 count).

How long is T 173 over Stream?

The structure is 24 ft (7.3 m) long with a longest span of 22 ft (6.6 m) and a deck 25 ft wide.

Who owns T 173 over Stream?

It is owned by the County Highway Agency.